| 568 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
| * | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {4} |
| 1 | DF | .~ BORON CONTAINING {4} |
| 3 | DF | .~.~ Plural borons containing {1} |
| 4 | | .~.~.~ Ten or more borons containing (e.g., decaborane, etc.) {1} |
| 5 | DF | .~.~.~.~> Sulfur, oxygen, halogen or Group IA or IIA light metal containing |